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 ###Instrução: Quantos eventos de inovação militar ocorreram na América do Norte entre 2015 e 2022?
 ###Tabelas: 
CREATE TABLE military_innovation_north_amer (country VARCHAR(50), year INT, events INT); INSERT INTO military_innovation_north_amer (country, year, events) VALUES ('United States', 2015, 3), ('Canada', 2015, 2), ('Mexico', 2015, 1), ('United States', 2016, 4), ('Canada', 2016, 3), ('Mexico', 2016, 2), ('United States', 2017, 5), ('Canada', 2017, 4), ('Mexico', 2017, 3), ('United States', 2018, 6), ('Canada', 2018, 5), ('Mexico', 2018, 4), ('United States', 2019, 7), ('Canada', 2019, 6), ('Mexico', 2019, 5), ('United States', 2020, 8), ('Canada', 2020, 7), ('Mexico', 2020, 6), ('United States', 2021, 9), ('Canada', 2021, 8), ('Mexico', 2021, 7), ('United States', 2022, 10), ('Canada', 2022, 9), ('Mexico', 2022, 8);
SELECT COUNT(events) total_events FROM military_innovation_north_amer WHERE (country IN ('United States', 'Canada', 'Mexico')) AND (year BETWEEN 2015 AND 2022);